Google AIY: DIY AI Vision & Voice

Google and Intel Release Do-It-Yourself Artificial Intelligence Vision Kit @ InfoQ

"Google created a do-it-yourself artificial intelligence kit that allows you to build an intelligent camera that can recognize objects. The main component of their kit is the VisionBonnet board for the raspberry pi. This board contains a Movidius chip created by Intel."

Vision

AIY Projects 

Do-it-yourself artificial intelligence

Voice

Google AIY Voice Kit @microcenter
$44.99

Get a FREE AIY VOICE KIT with purchase of Raspberry Pi 3 - $35 BUNDLED
BUY the BUNDLE

AIY VOICE KIT- $24.99

SOLID Principles with Slack & Twilio

SOLID Principles in Action: From Slack to Twilio
"...to show off the benefit of SOLID in a real-world, fully functional application
...using Slack API and Twilio API."

"SOLID, it is a set of principles for Object Oriented Design (OOD),
popularized by Uncle Bob Martin. SOLID is an acronym for:

• S – SRP – Single Responsibility Principle
• O – OCP – Open-Closed Principle
• L – LSP – Liskov Substitution Principle
• I – ISP – Interface Segregation Principle
• D – DIP – Dependency Inversion Principle

By following this set of principles, your code is more maintainable and more easily extended"